RiverFish

Roach · Rutilus rutilus

Roach in the Main river sites

Largest measured roach: 28.3 cm

The largest roach measured in Environment Agency surveys of the Main river sites was 28.3 cm, recorded at Wareham Boathouse to Swineham Point on 4 May 2005.

Across 18 measured roach, the median measured length was 19.2 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Main river sites.

See roach records across England →

Most recent observation14 June 2011Lower Bockhampton · 1 fish
Largest measured roach
28.3 cm
Median length
19.2 cm
Fish measured
18
Survey locations
4

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
28.3 cm4 May 2005Wareham Boathouse to Swineham Point84496
26.4 cm13 Jul 2006Lower Bockhampton100850
25.4 cm13 Jul 2006Lower Bockhampton100850
25.3 cm9 Aug 2006Watery Lane100982
24 cm13 Jul 2006Lower Bockhampton100850
23.6 cm4 May 2005Wareham Boathouse to Swineham Point84496
23.4 cm4 May 2005Wareham Boathouse to Swineham Point84496
22.9 cm4 May 2005Wareham Boathouse to Swineham Point84496
19.6 cm4 May 2005Wareham Boathouse to Swineham Point84496
18.8 cm4 May 2005Wareham Boathouse to Swineham Point84496

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding roach
Lower Bockhampton13 Jul 200614 Jun 20112
Watery Lane9 Aug 20069 Aug 20061
d/s East Stoke to u/s Swanage Railway Bridge14 Jun 200514 Jun 20051
Wareham Boathouse to Swineham Point4 May 20054 May 20051

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2005–2011

Survey records by year

Each bar shows how many survey visits recorded roach that year.

Fish measured by surveyors

Measured length distribution

See how the 18 measured fish were spread across different length ranges.

Smallest
8.4 cm
Lower quarter
17.1 cm
Median
19.2 cm
Upper quarter
23.9 cm
Largest
28.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main river sites

Compare other species with enough survey and measurement data for a detailed page.

Brown / sea trout European eel Atlantic salmon Minnow Bullhead Stone loach

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →